The Hillman Group Split Lock Washer, 1/4-Inch

For anyone assembling or maintaining hardware with matching nuts, bolts or screws, this zinc split lock washer is meant to add support at the fastener joint.

Its stated size is 1/4-inch, and the pack contains 100 washers. That makes it relevant when you need several matching pieces rather than a single replacement.

If you prioritize a washer intended to resist loosening from vibration, this design fits that brief, if you prefer a simpler washer for load distribution alone, a flat washer is a different approach.

Getting the most from it

Use the washer with a fastener of a similar diameter, as described for nuts, bolts and screw products. For example, when assembling a bracket with a matching bolt and nut, place the washer at the joint before tightening. The point is to distribute the load more evenly while helping the fastener resist loosening associated with vibration and corrosion.

The listing does not explain installation details or specify a particular application. Without that detail, match the stated 1/4-inch size to your hardware and follow the assembly requirements for the item you are working on. The washer is one part of a fastening setup, not a substitute for choosing compatible hardware or tightening it appropriately.

Why it’s worth it

A split lock washer is intended for joints where resistance to loosening matters, rather than simply adding a flat contact surface. That distinction can be useful on an assembly exposed to vibration: the washer is designed to help the fastener stay secure, while a basic flat washer is more directly suited to distributing load without the same stated locking purpose.

The 100-pack also makes sense for repeat work, maintenance or keeping matching spares on hand. It is less compelling if you only need one washer or have not confirmed that 1/4-inch is the right size. The product description does not provide performance measurements or a guarantee that a joint will remain tight in every condition, so treat the stated resistance as the intended function, not a promise for every setup.

The essentials

This is a zinc split lock washer in a 1/4-inch size, supplied in a 100-pack. It is described for use with nuts and bolts of similar diameter, as well as screw products. The stated purpose combines more uniform load distribution with resistance to loosening caused by vibration and corrosion.

There is no further detail here about dimensions beyond the listed size, the exact zinc specification or compatible applications. Check your fastener size and the needs of the assembly before choosing a full pack. It makes sense if you have repeated fastening work using compatible hardware, it is not worth it if you need a different size or a washer with specifications not provided in the listing.

When to choose it

Choose this pack when you need multiple split lock washers for matching 1/4-inch hardware and want the stated locking function for an assembly where vibration may be a concern. The practical advantage over buying a more basic flat washer is that this design is specifically presented as helping resist loosening, alongside distributing load.

Skip it if your fasteners are a different size, if you only need a one-off replacement, or if your application requires material or fit details that are not given. Confirming compatibility matters more than the pack size: a hundred washers are useful only when they suit the hardware you plan to use.